A peculiar Maxwell's Demon observed in a time-dependent stadium-like billiard
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Data
2012-10-15
Autores
Livorati, Andre L. P.
Loskutov, Alexander [UNESP]
Leonel, Edson Denis [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
The dynamics of a driven stadium-like billiard is considered using the formalism of discrete mappings. The model presents a resonant velocity that depends on the rotation number around fixed points and external boundary perturbation which plays an important separation rule in the model. We show that particles exhibiting Fermi acceleration (initial velocity is above the resonant one) are scaling invariant with respect to the initial velocity and external perturbation. However, initial velocities below the resonant one lead the particles to decelerate therefore unlimited energy growth is not observed. This phenomenon may be interpreted as a specific Maxwell's Demon which may separate fast and slow billiard particles. (C) 2012 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
Stadium billiard, Nonlinear mapping, Fermi acceleration, Scaling, Chaos
Como citar
Physica A-statistical Mechanics and Its Applications. Amsterdam: Elsevier B.V., v. 391, n. 20, p. 4756-4762, 2012.